The edible oil is a medium of cooking food. Whether vegetarian or non vegetarian. It provides taste and protines to the food. Almost all kinds of people whether rich or poor, vegetarians or non vegetarians uses the oil in one or other ways. It is a product of daily necessity. It is used as cooking medium in houses, sweet shops, hotels etc. mainly for preparing vegetable, hot dishes, sweet dishes and other varieties. The oil has an important place in any nutritive diet and therefore share a major part on the expenditure schedule.
The demand of oil has increased steadily because of various reasons like increase in population, desire of common man to use more oils, general awareness for the nutritive value of the food and rapid development of industries based on vegetable oils.